holzapfelr energy crossword

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Across
  1. 5. an energy rich substance
  2. 6. coming together
  3. 11. a resource that is always available or can naturally be replaced in a short time
  4. 13. intense heat from earth interior that’s warms the magma
  5. 15. a renewable resource
  6. 17. part of the nuclear reactor where nuclear fission occurs
  7. 20. compounds made from oil
  8. 22. electricity produced by flowing water
  9. 24. energy from the sun
  10. 26. a solid fossil fuel formed from plant remains
  11. 27. active solar cells
  12. 28. breaking apart
Down
  1. 1. a machine with turbines used to generate electricity
  2. 2. the central core of an atom that contains protons and neutrons
  3. 3. the process of burning fuels
  4. 4. a natural resource that is not replaced in a useful amount of time
  5. 7. gas that comes naturally from the ground
  6. 8. the most used thing for electricity production
  7. 9. a substance that provides energy
  8. 10. the percentage of energy that is used to perform work
  9. 12. one form of energy to another
  10. 14. chemical compounds that contain carbon and hydrogen atoms
  11. 16. a factory in which crude oil must undergo a process
  12. 18. fuel made from living things
  13. 19. adding alcohol to gasoline
  14. 21. reducing energy use
  15. 23. a rod used in a nuclear reactor to absorb neutrons
  16. 25. a layer of heating and cooling systems